import Vue from 'vue'
import VueRouter from 'vue-router'
import login from '../components/login.vue'
import home from '../components/home.vue'
import welcome from '../components/welcome.vue'
import Users from '../components/user/Users.vue'

Vue.use(VueRouter)



const router = new VueRouter({
  routes: [
    {
      path: '/',
      redirect: 'login'
    }
    , {
      path: '/login',
      component: login
    }, {
      path: '/home',
      component: home,
      redirect:'/welcome',
      children:[{
        path:"/welcome",
        component:welcome
      },
      {
        path:'/users',
        component:Users
      }
     
    ]
    }
  ]
})
//挂载路由导航守卫
router.beforeEach((to, form, next) => {
  //to将要访问的路径
  //form 代表从哪个路径跳转来的
  //next 是一个函数，表示放行
  // (next)  next('/login')
  if (to.path === "/login") return next()
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})
export default router
